Senior Backend Developer, Internal Platform

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Senior Backend Developer, Internal Platform

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Imagine a future where everyone has instant, low-cost access to powerful computing resources. We're building a fully featured European cloud computing platform, with everything one needs to run, scale, and deploy applications and workloads. And our infrastructure runs on 100% renewable energy.

ABOUT THE ROLE

We are hiring an experienced backend developer for our internal command center: the system of record for every GPU, node, rack, and cluster we operate. It tracks hardware lifecycle from procurement to decommissioning, real-time fleet health, capacity allocation across customers and pools, and how consumption reconciles against contracts and revenue. Every internal team will rely on what you build.

Being the early backend hire means larger ownership and expectations. You will design and own the core domain models, event-driven workflows, and integrations against live infrastructure telemetry, provisioning, billing, and incident tooling, and you will set the engineering standards others will follow as the team builds out around you. We are looking for someone who reads that as an opportunity, not a warning.

YOUR RESPONSIBILITIES

\* Design and build the backend services for our internal platform

\* Own data modeling for systems where correctness matters: lifecycle state machines, audit trails, and event histories that operators must be able to trust

\* Build and maintain integrations with GPU telemetry, provisioning, billing, PagerDuty, and ticketing systems

\* Design APIs consumed by internal teams and, over time, by automation across the platform

\* Drive performance, reliability, and data freshness

\* Raise the bar on CI/CD, test coverage, and deployment practices

\* Apply information security principles to engineering decisions

\* Work closely with Cloud, SRE, datacenter teams and sales, and communicate clearly with stakeholders across the company

YOUR KEY COMPETENCIES

\* 5+ years of backend engineering experience, with systems you have owned end to end in production

\* Strong proficiency with TypeScript on the backend (we use Node, with React on the frontend)

\* Proficiency with Go, or proven depth in another systems language and a clear willingness to make Go a daily tool

\* Strong SQL skills and a track record of designing data models that stay correct under concurrency, state transitions, and audit requirements

\* Experience designing, building, and operating service architectures, event-driven workflows, and REST APIs

\* Comfort integrating with complex external systems: telemetry streams, webhooks, third-party APIs, and the failure modes that come with them

\* The judgment to work autonomously in a high-ambiguity, high-stakes team environment

PRACTICALITIES

\* Hybrid mode: This role requires presence in our Helsinki office 3 days per week.

\* Employment type: Full-time and permanent.

WHAT'S NEXT

We're building fast and this role needs the right person behind it. There's no artificial deadline, but when we find who we're looking for, we move. If this sounds like your next move, apply now.

Please submit your application through our Careers page. We don’t accept applications sent by email.